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Envelope tracking amplifier apparatus

  • US 10,630,375 B1
  • Filed: 02/12/2019
  • Issued: 04/21/2020
  • Est. Priority Date: 10/19/2018
  • Status: Active Grant
First Claim
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1. An envelope tracking (ET) amplifier apparatus comprising:

  • a distributed ET amplifier circuit comprising;

    a first amplifier circuit configured to amplify a radio frequency (RF) signal based on a first ET voltage;

    a first ET circuit configured to generate the first ET voltage;

    a second amplifier circuit configured to amplify the RF signal based on a second ET voltage; and

    a second ET circuit configured to generate the second ET voltage;

    a first auxiliary amplifier circuit configured to amplify a first RF signal based on a first auxiliary voltage;

    a second auxiliary amplifier circuit configured to amplify a second RF signal based on a second auxiliary voltage; and

    an ET integrated circuit (ETIC) configured to;

    cause at least one ET circuit among the first ET circuit and the second ET circuit to provide at least one ET voltage among the first ET voltage and the second ET voltage to at least one amplifier circuit among the first amplifier circuit and the second amplifier circuit in response to determining that the at least one amplifier circuit is activated; and

    provide at least one auxiliary voltage among the first auxiliary voltage and the second auxiliary voltage to at least one auxiliary amplifier circuit among the first auxiliary amplifier circuit and the second auxiliary amplifier circuit in response to determining that the at least one auxiliary amplifier circuit is activated.

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